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Diffstat (limited to 'src/libs/engine/LADSPAPlugin.cpp')
-rw-r--r-- | src/libs/engine/LADSPAPlugin.cpp | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/src/libs/engine/LADSPAPlugin.cpp b/src/libs/engine/LADSPAPlugin.cpp deleted file mode 100644 index 37d66805..00000000 --- a/src/libs/engine/LADSPAPlugin.cpp +++ /dev/null @@ -1,269 +0,0 @@ -/* This file is part of Om. Copyright (C) 2006 Dave Robillard. - * - * Om is free software; you can redistribute it and/or modify it under the - * terms of the GNU General Public License as published by the Free Software - * Foundation; either version 2 of the License, or (at your option) any later - * version. - * - * Om is distributed in the hope that it will be useful, but WITHOUT ANY - * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS - * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - - -#include "LADSPAPlugin.h" -#include <iostream> -#include <cassert> -#include "float.h" -#include <stdint.h> -#include <cmath> -#include "InputPort.h" -#include "OutputPort.h" -#include "Plugin.h" - -namespace Om { - - -/** Partially construct a LADSPAPlugin. - * - * Object is not usable until instantiate() is called with success. - * (It _will_ crash!) - */ -LADSPAPlugin::LADSPAPlugin(const string& path, size_t poly, Patch* parent, const LADSPA_Descriptor* descriptor, samplerate srate, size_t buffer_size) -: NodeBase(path, poly, parent, srate, buffer_size), - _descriptor(descriptor), - _instances(NULL) -{ - assert(_descriptor != NULL); -} - - -/** Instantiate self from LADSPA plugin descriptor. - * - * Implemented as a seperate function (rather than in the constructor) to - * allow graceful error-catching of broken plugins. - * - * Returns whether or not plugin was successfully instantiated. If return - * value is false, this object may not be used. - */ -bool -LADSPAPlugin::instantiate() -{ - // Note that a DSSI plugin might tack more on to the end of this - if (!_ports) - _ports = new Array<Port*>(_descriptor->PortCount); - - _instances = new LADSPA_Handle[_poly]; - - size_t port_buffer_size = 0; - - for (size_t i=0; i < _poly; ++i) { - _instances[i] = _descriptor->instantiate(_descriptor, _srate); - if (_instances[i] == NULL) { - cerr << "Failed to instantiate plugin!" << endl; - return false; - } - } - - string port_name; - string port_path; - - Port* port = NULL; - - for (size_t j=0; j < _descriptor->PortCount; ++j) { - port_name = _descriptor->PortNames[j]; - string::size_type slash_index; - - // Name mangling, to guarantee port names are unique - for (size_t k=0; k < _descriptor->PortCount; ++k) { - assert(_descriptor->PortNames[k] != NULL); - if (k != j && port_name == _descriptor->PortNames[k]) { // clash - if (LADSPA_IS_PORT_CONTROL(_descriptor->PortDescriptors[j])) - port_name += " (CR)"; - else - port_name += " (AR)"; - } - // Replace all slashes with "-" (so they don't screw up paths) - while ((slash_index = port_name.find("/")) != string::npos) - port_name[slash_index] = '-'; - } - - port_path = path() + "/" + port_name; - - if (LADSPA_IS_PORT_CONTROL(_descriptor->PortDescriptors[j])) - port_buffer_size = 1; - else if (LADSPA_IS_PORT_AUDIO(_descriptor->PortDescriptors[j])) - port_buffer_size = _buffer_size; - - assert (LADSPA_IS_PORT_INPUT(_descriptor->PortDescriptors[j]) - || LADSPA_IS_PORT_OUTPUT(_descriptor->PortDescriptors[j])); - - if (LADSPA_IS_PORT_INPUT(_descriptor->PortDescriptors[j])) { - port = new InputPort<sample>(this, port_name, j, _poly, DataType::FLOAT, port_buffer_size); - _ports->at(j) = port; - } else if (LADSPA_IS_PORT_OUTPUT(_descriptor->PortDescriptors[j])) { - port = new OutputPort<sample>(this, port_name, j, _poly, DataType::FLOAT, port_buffer_size); - _ports->at(j) = port; - } - - assert(_ports->at(j) != NULL); - - /*PortInfo* pi = port->port_info(); - get_port_vals(j, pi); - */ - float default_val = 0.; // FIXME - - // Set default control val - if (port->buffer_size() == 1) - ((PortBase<sample>*)port)->set_value(default_val, 0); - else - ((PortBase<sample>*)port)->set_value(0.0f, 0); - } - - return true; -} - - -LADSPAPlugin::~LADSPAPlugin() -{ - for (size_t i=0; i < _poly; ++i) - _descriptor->cleanup(_instances[i]); - - delete[] _instances; -} - - -void -LADSPAPlugin::activate() -{ - NodeBase::activate(); - - PortBase<sample>* port = NULL; - - for (size_t i=0; i < _poly; ++i) { - for (unsigned long j=0; j < _descriptor->PortCount; ++j) { - port = static_cast<PortBase<sample>*>(_ports->at(j)); - set_port_buffer(i, j, ((PortBase<sample>*)_ports->at(j))->buffer(i)->data()); - if (port->type() == DataType::FLOAT && port->buffer_size() == 1) - port->set_value(0.0f, 0); // FIXME - else if (port->type() == DataType::FLOAT && port->buffer_size() > 1) - port->set_value(0.0f, 0); - } - if (_descriptor->activate != NULL) - _descriptor->activate(_instances[i]); - } -} - - -void -LADSPAPlugin::deactivate() -{ - NodeBase::deactivate(); - - for (size_t i=0; i < _poly; ++i) - if (_descriptor->deactivate != NULL) - _descriptor->deactivate(_instances[i]); -} - - -void -LADSPAPlugin::run(size_t nframes) -{ - NodeBase::run(nframes); // mixes down input ports - for (size_t i=0; i < _poly; ++i) - _descriptor->run(_instances[i], nframes); -} - - -void -LADSPAPlugin::set_port_buffer(size_t voice, size_t port_num, void* buf) -{ - assert(voice < _poly); - - // Could be a MIDI port after this - if (port_num < _descriptor->PortCount) { - _descriptor->connect_port(_instances[voice], port_num, (sample*)buf); - } -} - -#if 0 -// Based on code stolen from jack-rack -void -LADSPAPlugin::get_port_vals(ulong port_index, PortInfo* info) -{ - LADSPA_Data upper = 0.0f; - LADSPA_Data lower = 0.0f; - LADSPA_Data normal = 0.0f; - LADSPA_PortRangeHintDescriptor hint_descriptor = _descriptor->PortRangeHints[port_index].HintDescriptor; - - /* set upper and lower, possibly adjusted to the sample rate */ - if (LADSPA_IS_HINT_SAMPLE_RATE(hint_descriptor)) { - upper = _descriptor->PortRangeHints[port_index].UpperBound * _srate; - lower = _descriptor->PortRangeHints[port_index].LowerBound * _srate; - } else { - upper = _descriptor->PortRangeHints[port_index].UpperBound; - lower = _descriptor->PortRangeHints[port_index].LowerBound; - } - - if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) { - /* FLT_EPSILON is defined as the different between 1.0 and the minimum - * float greater than 1.0. So, if lower is < FLT_EPSILON, it will be 1.0 - * and the logarithmic control will have a base of 1 and thus not change - */ - if (lower < FLT_EPSILON) lower = FLT_EPSILON; - } - - - if (LADSPA_IS_HINT_HAS_DEFAULT(hint_descriptor)) { - - if (LADSPA_IS_HINT_DEFAULT_MINIMUM(hint_descriptor)) { - normal = lower; - } else if (LADSPA_IS_HINT_DEFAULT_LOW(hint_descriptor)) { - if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) { - normal = exp(log(lower) * 0.75 + log(upper) * 0.25); - } else { - normal = lower * 0.75 + upper * 0.25; - } - } else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(hint_descriptor)) { - if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) { - normal = exp(log(lower) * 0.5 + log(upper) * 0.5); - } else { - normal = lower * 0.5 + upper * 0.5; - } - } else if (LADSPA_IS_HINT_DEFAULT_HIGH(hint_descriptor)) { - if (LADSPA_IS_HINT_LOGARITHMIC(hint_descriptor)) { - normal = exp(log(lower) * 0.25 + log(upper) * 0.75); - } else { - normal = lower * 0.25 + upper * 0.75; - } - } else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(hint_descriptor)) { - normal = upper; - } else if (LADSPA_IS_HINT_DEFAULT_0(hint_descriptor)) { - normal = 0.0; - } else if (LADSPA_IS_HINT_DEFAULT_1(hint_descriptor)) { - normal = 1.0; - } else if (LADSPA_IS_HINT_DEFAULT_100(hint_descriptor)) { - normal = 100.0; - } else if (LADSPA_IS_HINT_DEFAULT_440(hint_descriptor)) { - normal = 440.0; - } - } else { // No default hint - if (LADSPA_IS_HINT_BOUNDED_BELOW(hint_descriptor)) { - normal = lower; - } else if (LADSPA_IS_HINT_BOUNDED_ABOVE(hint_descriptor)) { - normal = upper; - } - } - - info->min_val(lower); - info->default_val(normal); - info->max_val(upper); -} -#endif - -} // namespace Om - |